Centering and clamping means for saws and other articles



June 19, 1923.

- G. L. NORRIS CENTERING AND CLAMPING MEANS FOR SAWS AND OTHER ARTICLES Filed Sept. 14, 1922 IN Z/E/VTQH 620296 L4 Nor/15 WITNESSES ATTORNEYS Patented June 19, 192 3..

' c stones 1.. nonnis, or WILIiHNGTON, nnnnwenn cnn'r nnmc AND cLer/rrmcienniis non Ann ornnn Anrrcnns/ Application filed September 14; 1922. semi no. 588,225.

To all whom it may cmwerm.

'Be it known that I, GEO GE L. Norms, a citizen ofthe United Stateaand a resident of Wilmington, in the county of New Castle and State of Delaware, have invented a new i and Improved Center ng and Clamping Means for Saws and Other Articles, of

which the following isa description.

My invention relates to arbors for saws, emery wheels or the like and particularly to a means for centering the saw or wheel on the arbor and clamping the same firmly in position.

The general object of my invention is to provide a novel centering and clamping means improved in various particulars,

whereby to promote simplicity of assemblage to provide a secure fastening, and to provide an assemblage characterized by the facility with which the saw orthe like may be clamped or released. 1

Reference is to be had to the accompanying drawings forming a part of this speci fication, it being understood that the drawings are merely illustrative of practical examples of the invention.

Figure 1 is a longitudinal section of a portion of an arbor equipped with my invention, the View including afragment of a saw centered and clamped;

Figure 2 is a transverse section as indicated by the line 2-2, Figure 1;

Figure 3 is a front view of a ring entering into the device;

Figure 4 is a perspective view of one of the 'bush elements employed in association with the ring shown in Figure 3;

Figure 5 is a perspective view of a lied bush that may be employed.

In carrying out my invention in accord auce with the illustrated example a head 10 is provided havinga bore to lit the arbor 11.

modiacent the head 10 at the face thereof is a clamping ring'l2 to engage a saw or the. like, indicated at A, at one side. Sald rmg in one form of my invention has spaced webs 13 which may have holes 14 for lightness of construction. The head 10 and ring 12 are chambered. Within the chamberI provide an annular series of bush members 15 tapered at the front and each arranged between adjacent pairs of webs to be guided. The members may be formed as shown in Figure 4 with an oblong protuberance 16 at the back and projecting beyondthe outer edge of the bush member to engage behind the ring 12 indicated in dotted lines in Figure 2. c t

The bush means may be formed as shown in Figure 5 in Which the bush is designated byzthe numeral 115 and shown as provided \vithan arcuate flange 116 to which the conical surface extends, said flange being adapted to engage behind the ring 12, that is to saypto extend within the annular chamber 112 of said ring.

The bush in Figure 5 is shown larger than the one in Figure 4 and the three bush mem bers in practice may have such a size as to form substantially a complete cone to lie alongside one another without being separated by webs 13, it being understood that a I plain chambered or angular ring is employed with the member shown in Figure 5. i

A clamp collar 17 fits thearbor 11 so that the saw A or wheel to be clamped will be saw A.

disposed on the arbor between said collar 1?,

A nut '18 engages the The collar 17 has a conical chamber 20 to partially receive the tapered ends of tlie bushes 15 or 115. A coil spring 21 is pro-- vided on the arbor within the chamber of the head 10 and bears at one end against a washer 22. I

With the above described construction the .head 10 with washer 22 and spring 21 is placed on the arbor as well as the ring 12 and the bushes 15 or 115. The saw A for example is now placed on the arbor against the ring 12 so that the tapered ends of the bushes protrude through the bore or eye of the saw, the taper of the bushes serving to centeror equalize the saw on the arbor. The collar l'l and nut 18 are now placed on the arbor and said nut turned up to cause the, centered saw A to be firmly clamped be tween the ring 12 and the collar 17.

I would state in conclusion that while the illustrated examples constitute practical em bodiments of my invention 1 donot limit including a chamber ring presenting an annular shoulder disposed toward the head and spaced webs extending toward the center of the ring, a plurality of tapered bush memhers Within said head and guided between xclainp a saw, or wheel therebetween, and

means on, the arbor engaging said collar 15 adapted to cause a clamping aXis "thereon.

2. In a "device of the class, described, a

head adapted to fit an arbor, said head being formed with a chamber, a ring having aplurality of spaced webs projecting from its periphery towards itscenter loosely arranged ons'aid arbor adjacent the forward end of sa1d head, a plurality ofbush mem bers around said arbor between said webs,

said members being-V tapered, a washer behind said members, a spring between said washer and theurearvwall of the chamber in said head, and means also on said arbor forwardly of said ring and the article to be centered by said members for cl-amping'said article in place.

GEORGE L. mains. 

